INCOME TAXES - Schedule of Tax Effects of Temporary Differences that Gave Rise to Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Jan. 31, 2016
Assets:
Net operating loss ("NOL") carryforwards	$ 3,210	$ 3,345
Accrued expenses	3,524	2,144
Stock options	1,821	2,354
Purchased intangibles	1,678	1,905
Other	993	328
Total Assets	11,226	10,076
Liabilities:
Purchased intangibles	(4,483)	(4,375)
Property and equipment and other	(2,481)	(2,244)
Construction contracts	(2,282)	(3,681)
Total Liabilities	(9,246)	(10,300)
Net deferred tax assets	$ 1,980
Net deferred tax liabilities		$ (224)